the wheel symbolizes the self-moving power of the unconscious; that is, the Self… the Self may become a negative, torturing factor if its intentions are misunderstood; then the riddles go unanswered.
Von Franz grounds the Wheel in Jungian depth psychology by equating it with the Self, whose autonomous movement can be liberating or devastating depending on whether consciousness meets its demands.
, The Interpretation of Fairy Tales, 1970thesis